Getting "insufficient data left in message" on copy with binary

Hello,

I'm running 8.4 on Linux/Centos.  I am doing a "copy (select ....) to
'/absolute/path/to/file.dat' with binary". That works fine.  But when I load
that file into a table...

  copy mytable (id, mlid, parent_mlid, author_id, date_id, time_id,
content_type_id, provider_id,
    is_duplicate, is_spam, language_code, profanity, tonality, sentiment,
created_time, updated_at)
  from '/absolute/path/to/file.dat' with binary;

  ERROR:  insufficient data left in message
  CONTEXT:  COPY mytable, line 1, column provider_id

The same data works fine without the "with binary".  Also, the column it's
complaining about, provider_id, is a NOT NULL column, and the data is
definitely there -- i.e. not a NULL in data file.

I have searched for this message and mostly I see issues related to JDBC
drivers, so that doesn't appear relevant.  And they all talk about nul bytes
(0x00), but again, how can that be relevant when I'm in binary mode?  Seems
like it should understand null bytes here, if that's what this is about.

Anybody seen this?

Thanks,
Gordon

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